CA1043741A - Cap with tear strip for container necks - Google Patents
Cap with tear strip for container necksInfo
- Publication number
- CA1043741A CA1043741A CA251,683A CA251683A CA1043741A CA 1043741 A CA1043741 A CA 1043741A CA 251683 A CA251683 A CA 251683A CA 1043741 A CA1043741 A CA 1043741A
- Authority
- CA
- Canada
- Prior art keywords
- bead
- neck
- skirt
- reduced
- outer skirt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
- B65D41/32—Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
- B65D41/46—Snap-on caps or cap-like covers
- B65D41/48—Snap-on caps or cap-like covers non-metallic, e.g. made of paper or plastics
- B65D41/485—Snap-on caps or cap-like covers non-metallic, e.g. made of paper or plastics with integral internal sealing means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2401/00—Tamper-indicating means
- B65D2401/15—Tearable part of the closure
- B65D2401/25—Non-metallic tear-off strips
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Closures For Containers (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE:
The neck of a plastic container of the type originally in-tended for use with a foil type closure is formed with a top bead, a first reduced-diameter step and a second reduced-diameter portion and then a downward-outward widening breast. The cap has a top disk which seats on the neck and has an outer skirt having an internal upper bead engaging under the top bead and a second internal bead fitting deeply into the second reduced-diameter portion. An inner skirt depends from the disk and fits inside the neck. Thus the cap seats tightly on the container neck. To remove the cap, a circumferential internal weakened portion is formed in the outer skirt. A curved weakened portion extends up from the bottom edge of the outer skirt and merges with the circumferential weakened portion. A pull tab depends from the bottom edge of the skirt. By pulling upward on the tab, the portion of the outer skirt below the first reduced-diameter portion of the neck is torn away. The remainder of the cap may be snapped off and later replaced for reclosure.
The neck of a plastic container of the type originally in-tended for use with a foil type closure is formed with a top bead, a first reduced-diameter step and a second reduced-diameter portion and then a downward-outward widening breast. The cap has a top disk which seats on the neck and has an outer skirt having an internal upper bead engaging under the top bead and a second internal bead fitting deeply into the second reduced-diameter portion. An inner skirt depends from the disk and fits inside the neck. Thus the cap seats tightly on the container neck. To remove the cap, a circumferential internal weakened portion is formed in the outer skirt. A curved weakened portion extends up from the bottom edge of the outer skirt and merges with the circumferential weakened portion. A pull tab depends from the bottom edge of the skirt. By pulling upward on the tab, the portion of the outer skirt below the first reduced-diameter portion of the neck is torn away. The remainder of the cap may be snapped off and later replaced for reclosure.
Description
Thi~ invention relates to a new and improved pla~tic cap having a tear strip formed therein which fits over the neck of a container ~uch as a plastic milk container.
One of the features of the invention is the fact that a secure cap is provided for use with an inexpensive type of dis-posable plastic container which heretofore has been closed by a foil cap in an ineffective manner. The plastic cap provides an air~tight and liquid-tight ~eal which i~ superior to the seals previously provided for containers o~ this design.
One of the further features of the invention is the fact that the cap cannot be removed without tearing the skirt along lines purposely formed therein. The fact that the skirt ~ust be torn in order to open the cap makes tampering with the con-tents of the container detectable.
Another feature of the invention is the fact that after the skirt has been torn, permitting ready access to the interior of the eontainer, a reclosure cap is provided whieh i9 relatiY
air and liquid-tight yet can be readily removed and replaced each time a portion o~ the contents o~ the container is dispensed~
Another ~eature of the invention is the fact that the cap may be installed by automatic capping machinery. ~- -Other objects o~ tha present invention will become apparent -upon reading the ~ollowing specification and referring to the aceompanying drawings in which similar characters of referenee represent corresponding parts in each of the several views.
In the drawings:
Fig. 1 is an exploded side elevation view of the container and cap prior to installation.
Fig. 2 is a side elevational view partly broken away in seetion showing the eap seated on the container neek.
Fig. 3 is a perspective view showing the tear strip par-tially torn away. ~ ~
. . . ~, , '' t7~
-~ig . 4 i5 a view similar to Fig. 2 showing the portion of the cap above tho tear ~trip used as a reclosure cap.
The container neck 11 illustrated herein is of a type which i9 commonly used on inexpensive plastic disposable milk contain-ersO The top ed~e 13 of the cap is provided with a bead 12 which curves downwardly outwardly. Below t~e top bead 12 i~ a first reduced diameter portion 14 with a relatively abrupt top shoulder 16 between the reduced dia~eter portion 1l~ and bead 12. Reduced diameter portion 1l~ is approximately vertical. A second reduced diameter portion 17 o~ lesser outside diameter than the portion 14 is immediately below the latter with a relatively abrupt lower shoulder 18 between the two. Below the ~econd reduced diameter portion 17 is a dow~dly outwardly curving breast 19 which merges into the cylindrical portion o~ the bottle (not shown).
Cap 21 is ~ormed with a top disk 22 which seats on the top edge 13 o~ neck 11. A peripheral outer skirt 23 depends from disk 229 the skirt 23 having a relatively smooth cylindrical outside surface. The inside sur~ace of skirt 23 is irregular.
Thus an upper internal bead 24 in the assembled condition o~
the cap and neck fits securely under the bead 12 and engages under the shoulder 16. On the inside of the skirt 23, below bead 24 is a weakened portion 26 which is designated as a tear strip. Below weakened portion 26 is a lower bead 27 which fits deeply into the second reduced diameter portion 17 and engages under the shouldsr 18. A curved weakened portion 29 extends up from the lower edge 31 o~ skirt 23 and merges with the circum~er-ential weakened portion 28. To one side o~ weakened portion 29 is a pull tab 32 which depends rrom lower edge 31. By pulling tab 32 upwardly and thence clockwise around the cap 21 as viewed from the top o~ Fig. 3 the portion Or the skirt 23 below line 28 is pulled away so that the cap and neck have the appearance shown ~glll43~4~
in Fig. 4. When it is necessary to open the container, the reclosure cap 36 which remains after the lower portion of the skirt has been torn away can easily be pried off the bead 12 by reason of the fact that the edge 34 thereo~ is readily accessible. The reclosure cap 36 may be reinstalled each time a portion of the contents o~ the container has been dispensed.
An inner skirt 33 ~its along the inside 34 of the neck 11 and ~orms an inner seal both in the initial installation as shown in Fig. 2 and in the reclosure installation as shown in 10 Fig~ 4. ~ -The cap is readily instaLled by conventional capping machinery. It will be seen particularly with re~erence to Fig.
One of the features of the invention is the fact that a secure cap is provided for use with an inexpensive type of dis-posable plastic container which heretofore has been closed by a foil cap in an ineffective manner. The plastic cap provides an air~tight and liquid-tight ~eal which i~ superior to the seals previously provided for containers o~ this design.
One of the further features of the invention is the fact that the cap cannot be removed without tearing the skirt along lines purposely formed therein. The fact that the skirt ~ust be torn in order to open the cap makes tampering with the con-tents of the container detectable.
Another feature of the invention is the fact that after the skirt has been torn, permitting ready access to the interior of the eontainer, a reclosure cap is provided whieh i9 relatiY
air and liquid-tight yet can be readily removed and replaced each time a portion o~ the contents o~ the container is dispensed~
Another ~eature of the invention is the fact that the cap may be installed by automatic capping machinery. ~- -Other objects o~ tha present invention will become apparent -upon reading the ~ollowing specification and referring to the aceompanying drawings in which similar characters of referenee represent corresponding parts in each of the several views.
In the drawings:
Fig. 1 is an exploded side elevation view of the container and cap prior to installation.
Fig. 2 is a side elevational view partly broken away in seetion showing the eap seated on the container neek.
Fig. 3 is a perspective view showing the tear strip par-tially torn away. ~ ~
. . . ~, , '' t7~
-~ig . 4 i5 a view similar to Fig. 2 showing the portion of the cap above tho tear ~trip used as a reclosure cap.
The container neck 11 illustrated herein is of a type which i9 commonly used on inexpensive plastic disposable milk contain-ersO The top ed~e 13 of the cap is provided with a bead 12 which curves downwardly outwardly. Below t~e top bead 12 i~ a first reduced diameter portion 14 with a relatively abrupt top shoulder 16 between the reduced dia~eter portion 1l~ and bead 12. Reduced diameter portion 1l~ is approximately vertical. A second reduced diameter portion 17 o~ lesser outside diameter than the portion 14 is immediately below the latter with a relatively abrupt lower shoulder 18 between the two. Below the ~econd reduced diameter portion 17 is a dow~dly outwardly curving breast 19 which merges into the cylindrical portion o~ the bottle (not shown).
Cap 21 is ~ormed with a top disk 22 which seats on the top edge 13 o~ neck 11. A peripheral outer skirt 23 depends from disk 229 the skirt 23 having a relatively smooth cylindrical outside surface. The inside sur~ace of skirt 23 is irregular.
Thus an upper internal bead 24 in the assembled condition o~
the cap and neck fits securely under the bead 12 and engages under the shoulder 16. On the inside of the skirt 23, below bead 24 is a weakened portion 26 which is designated as a tear strip. Below weakened portion 26 is a lower bead 27 which fits deeply into the second reduced diameter portion 17 and engages under the shouldsr 18. A curved weakened portion 29 extends up from the lower edge 31 o~ skirt 23 and merges with the circum~er-ential weakened portion 28. To one side o~ weakened portion 29 is a pull tab 32 which depends rrom lower edge 31. By pulling tab 32 upwardly and thence clockwise around the cap 21 as viewed from the top o~ Fig. 3 the portion Or the skirt 23 below line 28 is pulled away so that the cap and neck have the appearance shown ~glll43~4~
in Fig. 4. When it is necessary to open the container, the reclosure cap 36 which remains after the lower portion of the skirt has been torn away can easily be pried off the bead 12 by reason of the fact that the edge 34 thereo~ is readily accessible. The reclosure cap 36 may be reinstalled each time a portion of the contents o~ the container has been dispensed.
An inner skirt 33 ~its along the inside 34 of the neck 11 and ~orms an inner seal both in the initial installation as shown in Fig. 2 and in the reclosure installation as shown in 10 Fig~ 4. ~ -The cap is readily instaLled by conventional capping machinery. It will be seen particularly with re~erence to Fig.
2 that the various edges Or the cap 21 slant inwardly upward and that the bead 12 is the large diameter portion o~ the upper - end o~ the neck 11. Hence by pushing downward on cap 21 it snaps over the bead 12 and the internal bead 27 ~its tightly under the shoulder 18 above the second reduced diameter portion 17. `;~
~, ~
~ .
. . . . . . . . . .
~, ~
~ .
. . . . . . . . . .
Claims (4)
OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. In combination, a plastic, thin-walled container having a neck with a smooth inside diameter, an even top edge, and on the exterior of said neck a top bead, a first reduced diameter portion below said top bead with a substantially hori-zontal first shoulder above said first reduced diameter portion, a second reduced diameter portion below said first reduced diameter portion with a substantially horizontal second shoulder above said second reduced diameter portion, the external diame-ter of said neck between said first and second reduced diameter portions being substantially less than the external diameter of said neck above said first reduced diameter portion, said neck widening downwardly-outwardly below said second reduced diameter portion; and a cap of resilient, tearable plastic material formed with a flat top disk fitting on top of said top edge and a peripheral outer skirt depending from said disk and fitting over the outside of said neck, the exterior of said outer skirt com-prising a substantially smooth cylinder, the inside of said outer skirt having an upper portion fitting outside said top bead, an upper internal bead fitting under said first shoulder, a lower internal bead fitting under said second shoulder and into said second reduced diameter portion, the inside diameter of said outer skirt being greater above said top bead than at said top bead and greater at said top bead than at said lower bead and about the same below said lower bead as above said top bead, said outer skirt formed with a circumferential reduced thickness portion immediately above said lower internal bead, with a slanted reduced thickness portion extending upward from the bottom edge of said outer skirt, and merging with said cir-cumferential reduced thickness portion and with a pull tab depending from the lower edge of said skirt adjacent said slanted reduced thickness portion, whereby by pulling said tab the por-tion of said skirt below said circumferential reduced thickness portion may be torn away.
2. The combination of claim 1 in which said cap also has an inner skirt slanting downwardly-inwardly below said top disk and fitting tightly inside said inside diameter of said neck, the juncture of the bottom of said top disk with said outer skirt and with said inner skirt being smoothly rounded.
3. A cap of a resilient, tearable plastic material for use on a plastic, thin-wall container of the type having a neck with a smooth inside diameter, an even top edge, and on the exterior of said neck a top bead, a first reduced diameter portion below said top bead with a substantially horizontal first shoulder above said first reduced diameter portion, a second reduced diameter portion below said first reduced diame-ter portion with a substantially horizontal second shoulder above said second reduced diameter portion, the external diam-eter of said neck between said first and second reduced diameter portions being substantially less than the external diameter of said neck above said first reduced diameter portion, said neck widening downwardly-outwardly below said second reduced diameter portion; said cap formed with a flat top disk, dimensioned to fit on top of said top edge and a peripheral outer skirt depend-ing from said disk and adapted to fit over the outside of said neck, the exterior of said outer skirt comprising a substan-tially smooth cylinder, the inside of said outer skirt having an upper portion adapted to fit outside said top bead, an upper internal bead adapted to fit under said first shoulder, a lower internal bead adapted to fit under said second shoulder, and into said second reduced diameter portion, the inside diameter of said outer skirt being greater above said top bead than at said top bead and greater at said top bead than at said lower bead and about the same below said lower bead as above said top bead, said outer skirt formed with a circumferential reduced thickness portion immediately above said lower internal bead, with a slanted reduced thickness portion extending upward from the bottom edge of said outer skirt and merging with said cir-cumferential reduced thickness portion and with a pull tab depending from the lower edge of said skirt adjacent said slanted reduced thickness portion, whereby by pulling said tab the portion of said skirt below said circumferential reduced thickness portion may be torn away.
4. A cap according to claim 3 which also comprises an inner skirt slanting downwardly-inwardly below said top disk and adapted to fit tightly inside said inside diameter of said neck, the junctures of the bottom of said top disk with said outer skirt and with said inner skirt being smootly curved.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/580,556 US3974932A (en) | 1975-05-27 | 1975-05-27 | Cap with tear strip for container necks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1043741A true CA1043741A (en) | 1978-12-05 |
Family
ID=24321579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA251,683A Expired CA1043741A (en) | 1975-05-27 | 1976-05-03 | Cap with tear strip for container necks |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3974932A (en) |
| CA (1) | CA1043741A (en) |
| MX (1) | MX148850A (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4066181A (en) * | 1976-03-16 | 1978-01-03 | Buckeye Molding Company | Container and closure assembly |
| CH620650A5 (en) * | 1977-08-16 | 1980-12-15 | Bruno J Segmueller | |
| US4303167A (en) * | 1980-03-21 | 1981-12-01 | Martinez Francisco P | Tearable bottle caps |
| US4951830A (en) * | 1983-06-24 | 1990-08-28 | Cochrane Benjamin A | Snap-on closure with corking skirt |
| USRE33764E (en) * | 1983-06-24 | 1991-12-10 | Press-on cap and seal | |
| US4723675A (en) * | 1985-08-22 | 1988-02-09 | Tuwa-Plastik Dr. Herbert Warnecke Kunststoffverarbeitung | Container and cap with guarantee ring |
| US5158195A (en) * | 1985-12-12 | 1992-10-27 | Tri-Tech Systems International, Inc. | Closure cap with a seal and method of and apparatus for forming such closure and seal |
| US4739891A (en) * | 1987-04-25 | 1988-04-26 | Velo Bind, Inc. | Plastic bottle cap having foil neck seal |
| USD380386S (en) * | 1995-05-18 | 1997-07-01 | Guaber S.R.L. | Combined bottle and cap |
| US6681947B2 (en) | 2001-06-26 | 2004-01-27 | Portola Packaging, Inc. | Bottle cap having tear tab and sealing bead |
| US7281636B2 (en) * | 2001-06-26 | 2007-10-16 | Portola Packaging, Inc. | Bottle cap having tear tab and sealing bead |
| US8177083B2 (en) * | 2004-04-08 | 2012-05-15 | Tetra Laval Holdings & Finance S.A. | Threadless cap with a nonintegral seal |
| GB201401682D0 (en) * | 2014-01-31 | 2014-03-19 | Obrist Closures Switzerland | A tamper-evident closure |
| US11730366B2 (en) * | 2019-10-21 | 2023-08-22 | Ocuflow, Inc. | Pneumatic pressure probe |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2772802A (en) * | 1950-10-27 | 1956-12-04 | Woydatt Leszek | Reusable bottle stopper with severable skirt portion |
| US3142403A (en) * | 1962-02-07 | 1964-07-28 | Tosca Seal Control Co Ltd | Reusable sealing caps |
| US3120900A (en) * | 1962-08-07 | 1964-02-11 | George W Faulstich | Bottle closure having tear strip and reclosure features |
| US3608765A (en) * | 1970-04-01 | 1971-09-28 | George W Faulstich | Neck for widemouth jar and cap therefor |
-
1975
- 1975-05-27 US US05/580,556 patent/US3974932A/en not_active Expired - Lifetime
-
1976
- 1976-05-03 CA CA251,683A patent/CA1043741A/en not_active Expired
- 1976-05-13 MX MX164691A patent/MX148850A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| US3974932A (en) | 1976-08-17 |
| MX148850A (en) | 1983-06-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4496066A (en) | Neck finish for plastic containers | |
| CA1043741A (en) | Cap with tear strip for container necks | |
| US5050754A (en) | Cap for a neck finish on a wide mouth container | |
| US8109404B2 (en) | Cap for shipping and storage containers including two types of tamper evidence | |
| US4919286A (en) | Hinged closure and container | |
| RU2278808C2 (en) | Cover and re-sealing system | |
| US4807769A (en) | Tamper indicating closure | |
| NZ208563A (en) | Tamper-evident closure cap | |
| US20060163190A1 (en) | Drinking spout and closure combination for a beverage container | |
| US6082567A (en) | Cap skirt with single bead and container neck structure | |
| US4438857A (en) | Cap and neck structure for a wide-mouth jar | |
| US4739891A (en) | Plastic bottle cap having foil neck seal | |
| US4109816A (en) | Plastic cap for bottle | |
| US4566601A (en) | Tamperproof container neck construction | |
| US5622273A (en) | Resealable snap-fit plastic closure | |
| US4784296A (en) | Cap for keg dispenser | |
| US5842592A (en) | Tamper-evident snap on cap with tear lever | |
| JPH0232599Y2 (en) | ||
| EP2380820A1 (en) | A closure assembly | |
| US4437574A (en) | Tamper-resistant bottle cap | |
| JP2660552B2 (en) | Hinged cap | |
| JP3796668B2 (en) | cap | |
| JP4190333B2 (en) | Container lid containing auxiliary container containing auxiliary substance | |
| CA1137029A (en) | Tamper proof container | |
| JP4253536B2 (en) | Container lid containing auxiliary container containing auxiliary substance |